<template>
    <el-menu default-active="home" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose"
        :collapse="isCollapse" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b">


        <h2 class="title-user">
            <span v-if="!isCollapse">后台管理系统</span>
            <img class="logo-aside" v-else src="@/assets/logo.png" alt="后台图片" />
        </h2>
        <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :key="item.name" :index="item.name">
            <i :class="`el-icon-${item.icon}`"></i>
            <!-- <router-link></router-link> -->
            <span slot="title">{{ item.label }}</span>
        </el-menu-item>


        <el-submenu index="1" v-for="item in hasChildren" :key="item.label" :index="item.label">
            <template slot="title">
                <i :class="`el-icon-${item.icon}`"></i>
                <span slot="title">{{ item.label }}</span>
            </template>

            <el-menu-item-group v-for="subItem in item.children" :key="subItem.name">
                <el-menu-item @click="clickMenu(subItem)" :index="subItem.name">{{ subItem.label }}</el-menu-item>
            </el-menu-item-group>
        </el-submenu>

        <!-- <el-menu-item index="3" disabled>
            <i class="el-icon-document"></i>
            <span slot="title">导航三</span>
        </el-menu-item>
        <el-menu-item index="4">
            <i class="el-icon-setting"></i>
            <span slot="title">导航四</span>
        </el-menu-item> -->



    </el-menu>

</template>
<style>
/* .el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
} */

.el-menu-vertical-demo {
    height: 100vh;
}

.title-user {
    text-align: center;
    color: #fff;
    padding: 20px 5px;
}

.logo-aside {
    width: 30px;
    height: 30px;
}
</style>
<script>

// export default {
//     data() {
//         return {}
//     }
// }


export default {
    data() {
        return {

            menuData: [
                {
                    path: "/",
                    name: "home",
                    label: "首页",
                    icon: "s-home",
                    url: "Home/Home"
                },
                {
                    path: "/mall",
                    name: "mall",
                    label: "商品管理",
                    icon: "video-play",
                    url: "MallManage/MallManage"
                },
                {
                    path: "/user",
                    name: "user",
                    label: "用户管理",
                    icon: "user",
                    url: "UserManage/UserManage"
                },
                {
                    label: "其他",
                    icon: "location",
                    children: [
                        {
                            path: "/page1",
                            name: "page1",
                            label: "页面1",
                            icon: "setting",
                            url: "Other/PageOne",
                        },
                        {
                            path: "/page2",
                            name: "page2",
                            label: "页面2",
                            icon: "setting",
                            url: "Other/PageTwo",
                        },
                    ]
                },
            ]
        };
    },
    methods: {
        handleOpen(key, keyPath) {
            console.log(key, keyPath);
        },
        handleClose(key, keyPath) {
            console.log(key, keyPath);
        },
        clickMenu(item) {
            // console.log(item);
            // 使用router方法
            // 当页面的路由与跳转的路由不一致时才进行跳转   并且还有重定向的问题
            if (this.$route.path !== item.path && !(this.$route.path == '/home' && (item.path == '/'))) {
                this.$router.push(item.path)
            }
            this.$store.commit('selectMenu', item)
        },


    },
    computed: {
        // 没有子菜单
        noChildren() {
            return this.menuData.filter(item => !item.children)
            // console.log(this.menuData.filter(item => !item.children));
        },
        // 有子菜单
        hasChildren() {
            return this.menuData.filter(item => item.children)
            // console.log(this.menuData.filter(item => !item.children));
        },
        isCollapse() {
            return this.$store.state.tab.isCollapse
        }
    }
}
</script>